Imported existing code

indra/llmessage/llservice.cpp

@@ -0,0 +1,117 @@
+/** 
+ * @file llservice.cpp
+ * @author Phoenix
+ * @date 2005-04-20
+ *
+ * $LicenseInfo:firstyear=2005&license=viewergpl$
+ * 
+ * Copyright (c) 2005-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+#include "llservice.h"
+
+LLService::creators_t LLService::sCreatorFunctors;
+
+LLService::LLService()
+{
+}
+
+LLService::~LLService()
+{
+}
+
+// static
+bool LLService::registerCreator(const std::string& name, creator_t fn)
+{
+	llinfos << "LLService::registerCreator(" << name << ")" << llendl;
+	if(name.empty())
+	{
+		return false;
+	}
+
+	creators_t::value_type vt(name, fn);
+	std::pair<creators_t::iterator, bool> rv = sCreatorFunctors.insert(vt);
+	return rv.second;
+
+	// alternately...
+	//std::string name_str(name);
+	//sCreatorFunctors[name_str] = fn;
+}
+
+// static
+LLIOPipe* LLService::activate(
+	const std::string& name,
+	LLPumpIO::chain_t& chain,
+	LLSD context)
+{
+	if(name.empty())
+	{
+		llinfos << "LLService::activate - no service specified." << llendl;
+		return NULL;
+	}
+	creators_t::iterator it = sCreatorFunctors.find(name);
+	LLIOPipe* rv = NULL;
+	if(it != sCreatorFunctors.end())
+	{
+		if((*it).second->build(chain, context))
+		{
+			rv = chain[0].get();
+		}
+		else
+		{
+			// empty out the chain, because failed service creation
+			// should just discard this stuff.
+			llwarns << "LLService::activate - unable to build chain: " << name
+					<< llendl;
+			chain.clear();
+		}
+	}
+	else
+	{
+		llwarns << "LLService::activate - unable find factory: " << name
+				<< llendl;
+	}
+	return rv;
+}
+
+// static
+bool LLService::discard(const std::string& name)
+{
+	if(name.empty())
+	{
+		return false;
+	}
+	creators_t::iterator it = sCreatorFunctors.find(name);
+	if(it != sCreatorFunctors.end())
+	{
+		//(*it).second->discard();
+		sCreatorFunctors.erase(it);
+		return true;
+	}
+	return false;
+}
+